All items tagged with DIY (32)

Modern PCB Design Practices: Part 1 — An Overview of the Process

March 22, 2023 by Ethan Winer

Modern PCB Design Practices: Part 1 — An Overview of the Process

In this two-part series, Ethan Winer examines current practices and methods for designing four-layer printed circuit boards using surface-mounted components (SMDs). A great article for our DIY readers and many developers who often are faced with the need to build and test their projects on a properly designed, prototype printed circuit board. Part 1 presents an overview of the process, while Part 2 he will explain specific strategies. Many related issues will be described along the way.

You Can DIY! Egg Speaker Amp and System

December 21, 2022 by Reinhard Metz

You Can DIY! Egg Speaker Amp and System

Most of our readers still remember Tom Perazella’s extraordinary egg speaker project with SB Acoustics Satori drivers, featured in the September, October, and November 2018 issues of audioXpress. Inspired by that design, Metz decided to build his own version, and also explore his own take with an active crossover tri-amp approach using a miniDSP 4x10HD system feeding a dedicated six-channel amplifier using Purifi 425W Class-D units. The new Egg Speaker Amp and System is an inspired take on the original. This article was originally published in audioXpress, July 2022.

You Can DIY! Building a Guitar-Controlled Synthesizer: VCA & VCF

November 8, 2022 by Ethan Winer

You Can DIY! Building a Guitar-Controlled Synthesizer: VCA & VCF

Ethan Winer offers his fifth Guitar-Controlled Synthesizer article where he describes how to make two key modules needed by every analog synthesizer: the Voltage Controlled Amplifier (VCA) and Voltage Controlled Filter (VFC). This article explains two different VCA circuits, with a simpler one that works fine for one-off projects where precise unit-to-unit repeatability isn’t needed, and a second circuit similar to the VCA in the original Moog synthesizers. This article was originally published in audioXpress, August 2022.

You Can DIY! Building a Guitar-Controlled Synthesizer: LFO and ADSR

October 12, 2022 by Ethan Winer

You Can DIY! Building a Guitar-Controlled Synthesizer: LFO and ADSR

This third article continues to follow Ethan Winer's fascinating journey of building modules for a Guitar-Controlled Synthesizer. The two previous articles described the core circuits he developed for this project that uses an electric guitar instead of a keyboard to control an analog synthesizer. This article continues with two components that are essential for all analog synthesizers: The Low Frequency Oscillator (LFO) and the Attack Decay Sustain Release (ADSR) envelope generator. Both of these circuits generate voltages that control other modules in the synthesizer. This article was originally published in audioXpress, June 2022

You Can DIY! Building a Guitar-Controlled Synthesizer - Frequency to Volts and Back

June 2, 2022 by Ethan Winer

You Can DIY! Building a Guitar-Controlled Synthesizer - Frequency to Volts and Back

This is the second article in a fascinating DIY journey of a guitar-controlled, all-analog synthesizer project that will include multiple stages and modules. Following a Sample & Hold circuit designed to retrieve previous voltages that no longer exist, this article details voltage control and how the playing is converted to voltages and back to frequency.

Xuron Introduces ESD-Safe Cutters and Pliers for Precision PCB Assembly and Repairs

January 14, 2022 by audioXpress Staff

Xuron Introduces ESD-Safe Cutters and Pliers for Precision PCB Assembly and Repairs

Xuron Corp. of Saco, Maine, introduced a full line of ergonomic cutters and pliers that are ideally suited for precise electronic applications such as reaching into densely populated printed circuit boards. Being the original inventor of the Micro-Shear blade by-pass cutting technology used on all its cutters, Xuron now expands its range of products for electronics professionals and enthusiasts with new electrostatic discharge-safe (ESD-safe) cutters and pliers.

You Can DIY! The DH-220C MOSFET Power Amplifier - Part 2 Construction and Testing Instructions

December 15, 2021 by Bob Cordell and Rick Savas

You Can DIY! The DH-220C MOSFET Power Amplifier - Part 2 Construction and Testing Instructions

This reference DIY project details of an upgrade construction for the legendary Hafler DH-220 lateral MOSFET power amplifier, which can also be used to upgrade other Hafler models or even inspire new designs. The design is implemented on two PCBs, one as a drop-in replacement for the original Hafler circuit board and another board that consolidates all of the output stage wiring and components within the heatsink and under the main PCB. After the authors detailed the design and performance of the DH-220C upgrade amplifier, in this second part of the article, Bob Cordell and Rick Savas discuss the construction and testing. This article was originally published in audioXpress, August 2021.

You Can DIY! The DH-220C MOSFET Power Amplifier - Part 1 The Circuit

December 8, 2021 by Bob Cordell and Rick Savas

You Can DIY! The DH-220C MOSFET Power Amplifier - Part 1 The Circuit

This article offers the first serving of an amazing DIY project from amplifier experts Bob Cordell and Rick Savas with an upgrade for the legendary Hafler DH-220 lateral MOSFET power amplifier. The design is implemented on two PCBs, one as a drop-in replacement for the original Hafler circuit board and the other as a new board that consolidates all of the output stage wiring and components within the heatsink and under the main PCB. This article was originally published in audioXpress, July 2021

Xuron WickGun Desoldering Braid Dispenser Features Replaceable & Interchangeable Cassettes

September 24, 2021 by audioXpress Staff

Xuron WickGun Desoldering Braid Dispenser Features Replaceable & Interchangeable Cassettes

A handy hand-held dispenser that lets users dispense, position, and cut-off desoldering braid using one hand and eliminates finger burns and waste has been introduced by Xuron Corp. of Saco, Maine. The Xuron WickGun desoldering braid dispenser is a gun-shaped tool that is designed to be held in one hand to safely dispense, position, and cut-off braid without finger burns.

Sennheiser Introduces Evolution Wireless Digital Microphone Systems for Corporate and Education Spaces

June 1, 2021 by audioXpress Staff

Sennheiser Introduces Evolution Wireless Digital Microphone Systems for Corporate and Education Spaces

Sennheiser designed the new Evolution Wireless Digital, offering a professional wireless microphone system that is easier to use, based on an easy, app-based process, while retaining all the multi-channel capability and reliability that users have come to expect of UHF and 1G8 microphones. The different systems are ideal for corporations and schools were users have to setup audio for themselves.

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